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I got a little lost between 3 types powerheads.
Can anyone explain what is the different and the additional features between them?
1. Gyre xf250
2. icecube gyre 3K
3.glamorca 3k*

There is a big difference in price.

Can't speak to the differences. There is a new series of Gyre coming out soon (in the US, believe it is already available elsewhere) so, if you end up going that route, you might want to wait for the new series.